When a file expansion failed because we didn't have enough space for indirect extents make sure we truncate extents created so far so that we don't leave extents beyond EOF.

CC: stable@vger.kernel.org Signed-off-by: Jan Kara jack@suse.cz --- fs/udf/inode.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 787e6a7b355e..fc5937358148 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -431,8 +431,10 @@ static int udf_do_extend_file(struct inode *inode, }

if (fake) { - udf_add_aext(inode, last_pos, &last_ext->extLocation, - last_ext->extLength, 1); + err = udf_add_aext(inode, last_pos, &last_ext->extLocation, + last_ext->extLength, 1); + if (err < 0) + goto out_err; count++; } else { struct kernel_lb_addr tmploc; @@ -466,7 +468,7 @@ static int udf_do_extend_file(struct inode *inode, err = udf_add_aext(inode, last_pos, &last_ext->extLocation, last_ext->extLength, 1); if (err) - return err; + goto out_err; count++; } if (new_block_bytes) { @@ -475,7 +477,7 @@ static int udf_do_extend_file(struct inode *inode, err = udf_add_aext(inode, last_pos, &last_ext->extLocation, last_ext->extLength, 1); if (err) - return err; + goto out_err; count++; }

@@ -489,6 +491,11 @@ static int udf_do_extend_file(struct inode *inode, return -EIO;

return count; +out_err: + /* Remove extents we've created so far */ + udf_clear_extent_cache(inode); + udf_truncate_extents(inode); + return err; }

/* Extend the final block of the file to final_block_len bytes */